Spindle-bearing



(No Model.)

L. J. CARROLL.

SPINDLE BEARING.

Patented Deo. 21,1897.

UNITED STATES PATENT OFFICE.

EDGAR J. CARROLL, OF VORCESTER, MASSACHUSETTS, ASSIGNOR TO THE SAVYER SPINDLE COMPANY, OF PORTLAND, MAINE.

SPINDLE-BEARING.

SPECIFICATION forming part of Letters Patent No. 595,903, dated December 21, 1897.

Application filed J' uly 12, 1897. Serial No. 644,174. (No model) To all whom t may concern:

Be it known that I, EDGAR J. CARROLL, of Worcester, county of lVorcester, State of Massachusetts, have invented an Improvement in Spindle-Bearings, of which the following description, in connection with the accompanying drawings, is a speciiication, like letters on the drawings representinglike parts.

This invention more particularly relates to that class of spinning-spindles wherein the tapering pintle of the spindle enters a correspondingly-tapered bolster; and it has for its object the production of simple and novel means for increasing the life of the spindlestep, whereby a uniform fit is attained between the exterior of the tapering pintle and the tapering` interior of the bolster.

In my present invention the lower end of the bolster is longitudinally slotted to receive therein the step, made as a block of preferably hardened steel and square in cross-section, the step resting on a vertically-,adj ustable support carried' by the bolster. one face of the step becomes worn, the step is withdrawn and partially turned to bring a fresh face uppermost and reinserted in the bolster.

Figure 1 is a vertical sectional view of a spindle bearing embodying my invention. Fig. 2 is a side elevation of the bolster removed. Eig. 3 is a transverse sectional view on the line Fig. l. Fig. 4 is a perspective view of the step detached.

The spindle A, having a tapering pintle and provided with a sleeve-whirl A2, and the supporting bolster-case B, having a threaded shank B2 to receive the usual nut, (not 'shown,) by which it may be clamped to the rail, may be and are all as usual and well known in this class of spindles. The bolster or loose bearing D (shown separately in Fig. 2) is slabbed off or eut away at one side, as at CZ, near its lower end and longitudinally slotted at d', preferably from one to the other side. A screw-stud d2 enters a threaded hole in the closed lower end of the bolster and may be provided with a check-nut @ZX to more securely hold said stud in adjusted position. A pin D is inserted in the shank of the bolster-case B, extending thereinto a slight distance to engage the attened face d of the bolster and prevent rotation thereof in the case, as clearly shown in Fig. 3.

Between the point of the spindle and the top of the stud cl2 is inserted a removable step m, shown as a block square in crosssection and of such size as to enter snugly the slot d of the bolster, the block being preferably made of hardened steel.

In assembling the parts the spindle is inserted in the bolster, the step m placed in the slot d', and the stud cl2 adjusted until the spindle-pintle properly its the bolster, after which the check-nut ZX is tightened up and the bolster slipped into place in the case. Now when the bearing-face of the step becomes worn the bolster is removed, the step withdrawn and given a quarter-turn and replaced, thus bringing a new face uppermost to take the end thrust of the spindle, this operation being repeated when necessary until all four faces are worn. The life of the step is thus increased four-fold and the change from one face to a new unworn one is quickly effected.

The slot in the bolster presents a free passage for oil and maintains the step well lubricated at all times.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. A bolster-case, combined with a bolster held loosely therein and longitudinally slotted near its lower end, a vertically-adjustable step-support carried by the bolster, and a removable step square in cross-section and having a plurality of bearing-faces, adapted to be loosely held in the slot of the bolster between the end of the spindle and the stepsupport, substantially as described.

2. A bolster-case, combined with a bolster held loosely therein, slabbed o near its lower end and longitudinally slotted, a removable spindle-step having a plurality of bearingfaces, adapted to be loosely inserted in the slot, an adjustable step-support carried by the bolster, and a projection within the case to engage the flattened portion and thereby prevent rotation of the bolster, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDGAR J. CARROLL.

Witnesses:

C. F. STEVENS, WM. E. LEWIS.

IOO 

